The invention proceeds from an armrest device for an aircraft seat, with a cushion unit, which is at least substantially implemented by an elastomer and which is provided at least for forming an elastic substrate for an arm support for a passenger. It has two planar surfaces, a deck and a back, that are fastened together at an approximately 90 degree angle. The preferred method comprises injection molding of thermoplastic materials that are saturated with gasses, particularly in their supercritical phase. Then, the parameter setting unit resets the parameter based upon the value obtained through the predetermined interpolation calculation. The composition is a two-part coating composition having an amine component including one or more aspartic ester amines and optionally one or more amine-functional coreactants, an isocyanate component including one or more polyisocyanates, and material selected from the group of fillers, extenders, pigments, and combinations thereof. A method is disclosed for irrigating and spraying crops using the same conduit connected to either an irrigation ground water source or a sprayer-approved chemical source, but at no time is the conduit connected to both sources simultaneously.